Table 2: Knockdown time (KT50) of different monoterpenes loaded on paper discs against female adult Cx. pipiens.

Compound (min)⁢95% confidence limits (min) ±  SE  ± SE
LowerUpper

PD117.20014.80019.40046.12
PD235.90034.30037.40015.281
PD327.44525.91928.91320.666
PD420.79919.22422.28724.426
PD537.32936.03538.6397.304
PD633.20531.39934.99116.426
PD728.72626.76430.65117.673

Knockdown times required to kill 50% of the population exposed.
Slope of the regression line ± standard error (SE).
Intercept of the regression line ± SE.
Chi square value.
PD: paper discs.
PD1: immobilization of blend of ketone monoterpenes (camphor, menthone, carvone, and fenchone) on paper discs.
PD2: immobilization of blend of alcohol monoterpenes (geraniol, thymol, and menthol) on paper discs.
PD3: immobilization of blend of alkene monoterpenes (limonene and camphene) on paper discs.
PD4: PD1 + citronella oil on paper discs.
PD5: PD2 + citronella oil on paper discs.
PD6: PD3 + citronella oil on paper discs.
PD7: immobilization of citronella oil on paper discs.